#include<bits/stdc++.h>
using namespace std;
int a,b;
char c;
int sc(){
    if(c=='+') return a + b;
    if(c=='-') return a - b;
    if(c=='*') return a * b;
    if(c=='/') return a / b;
    if(c=='%') return a % b;
}
int main(){
    cin>>a>>c>>b;
    cout<<sc();
    return 0;
}
